> > USB controller may access a wrong address for the dTD (endpoint transfer > descriptor) and then hang. This happens a lot when doing tests with > g_ether module and iperf, a tool for measuring maximum TCP and UDP > bandwidth. > > This hardware bug is explained in detail by errata number 2858 for i.MX23: > http://cache.freescale.com/files/dsp/doc/errata/IMX23CE.pdf > Does this patch fix your problem? > +#if defined CONFIG_ARCH_MX51 || defined CONFIG_SOC_IMX35 > +#define POSTPONE_FREE_LAST_DTD > +#else > +#undef POSTPONE_FREE_LAST_DTD > +#endif > + All i.mx SoC has this problem, if PowerPC also has this problem, you can delete #if defined. Else, you can define it for all i.mx SoC (CONFIG_ARCH_MXC | CONFIG_ARCH_MXS) > /* ### define USB registers here > */ > #define USB_MAX_CTRL_PAYLOAD 64 > -- > 1.7.2.5 > > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
